*{
  margin:0;
  padding:0;
}
ul,li,ol{
  list-style: none;
}
a{
  text-decoration: none;
}
.clearfix:after{
  content:'';
  display: block;
  height:0;
  visibility: hidden;
  opacity: 0;
  clear: both;
}
.clearfix{
  zoom:1;
}
